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| Number | Title | Issue Date |
| 4689877 | Method and apparatus for controlling the throat height of batch fabricated thin film magnetic transducers A method for determining the position of a lapped edge of a substrate during lapping of a row of thin film magnetic transducer elements. First and second electrical lapping guide structures are formed on each side of the row of transducer elements. The la... | 09/01/1987 |
| 4685014 | Production method of thin film magnetic head In producing a magnetic head by thin film technique, a magnetic film is formed on an insulating member covering coil conductor films after the surface of the insulating member is flattened. After a flattening coating is formed on the insulating member, th... | 08/04/1987 |
| 4675986 | Electrical lapping guide for controlling the batch fabrication of thin film magnetic transducers Method and apparatus for controlling the throat height of batch fabricated thin film magnetic transducers. During deposition of the transducer elements on a substrate, a resistive electrical lapping guide is deposited on at least one end of the array of t... | 06/30/1987 |
| 4677036 | Method of production of thin film magnetic head and magnetic head There provides a process for preparing a coil type thin film magnetic head having high density record by planarization differences in level caused by an electroconductive coil holded between upper and lower magnetic cores.... | 06/30/1987 |
| 4639289 | Process for producing a magnetic read - write head and head obtained by this process A first magnetic material film is deposited on a support, a groove is etched in the first magnetic film which is shaped like a figure eight, a double coil is formed and is wound respectively around the two central pole pieces. An insulating material layer... | 01/27/1987 |
| 4624048 | Method of making magnetic head sliders For making rails in workpieces for magnetic head sliders for sensors of magnetizable media, anodic oxidation of highly pure aluminum substrates is applied. For that purpose, the respective surface of the substrates is covered with a mask cover which leave... | 11/25/1986 |
| 4550353 | Thin-film magnetic head and method for fabricating the same A thin-film magnetic head having a magnetic core of double step structure and a method of fabricating it. A first magnetic core is formed on a substrate, which has a predetermined thickness at a pole chip region thereof and a thickness larger than the pre... | 10/29/1985 |
| 4546541 | Method of attaching electrical conductors to thin film magnetic transducer A method of attaching electrical conductors to a thin film magnetic transducer having a transducing element and a plurality of substantially planar conductive leads formed into a predetermined pattern comprising the steps of mounting the thin film magneti... | 10/15/1985 |
| 4481071 | Process of lift off of material Process for lift-off fabrication of sputtered dielectric or nonmagnetic gap materials and thin-film heads for either a single-element thin-film head or side-by-side elements on a thin-film head. The lift-off process utilizes a copper coating that is remov... | 11/06/1984 |
| 4443294 | Process for forming magnetic film pattern In forming a magnetic film pattern of permalloy by photoetching, the permalloy magnetic film formed on a substrate is etched in an etching solution containing ferric chloride, hydrochloric acid and phosphoric acid, thereby gradually reducing the thickness... | 04/17/1984 |
| 4435900 | Method of manufacturing a magnetic head unit A method of manufacturing an integrated magnetic head unit includes providing a substrate which supports a plurality of electromagnetic transducing elements connected to bonding pads. The transducing elements are then covered by a silicon plate which is a... | 03/13/1984 |
| 4436593 | Self-aligned pole tips A method is disclosed for precisely aligning the pole tips of a thin film magnetic head. Two separate metallic layers, such as Permalloy (Ni-Fe alloy) are separated by a layer of insulating material such as silicon dioxide or AL2 O3 ... | 03/13/1984 |
| 4418472 | Method of delineating thin film magnetic head arrays A method for delineating vertically configured thin film magnetic heads formed upon silicon wafer substrates. A plurality of thin film magnetic head arrays are formed on a (110) oriented surface of a single crystal silicon substrate so that the edges of t... | 12/06/1983 |
| 4399479 | Thin film magnetic head having good low frequency response To provide a thin film magnetic head having good low frequency response, the invention teaches the use of a movable mask technique whereby a first deposited magnetic film is provided with a tapered, or knife-, edge. Gap spacer material is then deposited o... | 08/16/1983 |
| 4370802 | Method of making a thin film magnetic head assembly with multiconductive connecting elements A method of making a thin film magnetic head assembly having a substrate, superstrate and thin film magnetic transducer mounted therebetween wherein the thin film magnetic transducer includes conductive leads located interior to and extending between the ... | 02/01/1983 |
| 4370801 | Method of making a thin film magnetic head assembly with multiconductive connecting elements A method of making a thin film magnetic head assembly having a substrate, superstrate and thin film magnetic transducer mounted therebetween wherein the thin film magnetic transducer includes conductive leads located interior to and extending between the ... | 02/01/1983 |
| 4333229 | Method of manufacturing thin film magnetic head/slider combination A method of manufacturing thin-film magnetic transducers in which the transducers are deposited onto a substrate member adjacent a finished and lapped surface in a manner such that no further lapping of the slider rail adjacent the transducer is required ... | 06/08/1982 |
| 4281357 | Thin film magnetic head and method of making the same A thin film magnetic head is disclosed which includes a substrate, a first layer of magnetic material having a first offset portion, a second layer of magnetic material having a second offset portion overlying the first offset portion, and a layer of cond... | 07/28/1981 |
| 4260450 | Method of fabrication for thin film magnetic transducers A method for formation of thin film inductive magnetic transducers wherein a minimum number of basic photomasks are utilized for deposition of successive thin film winding layers, and wherein all odd-to-even inter-film electrical contact points are dispos... | 04/07/1981 |
| 4251910 | Method of making multitrack magnetic heads High track density multitrack magnetic heads are batch-fabricated from a stack of wafers which are photolithographically processed to provide lands and grooves on the wafers. Thin magnetic films are deposited in the grooves; and coils respectively inducti... | 02/24/1981 |
| 4246695 | Two rail slider assembly production technique for making thin film heads A process is disclosed wherein read/write transducers are applied simultaneously to a mass of motion-constrained, pre-machined, air bearing sliders.... | 01/27/1981 |
| 4246620 | Thin film magnetic head and method for manufacturing the same A thin film magnetic head having a contact surface which, when such magnetic head is in use, slidingly contacts a magnetic information carrier, such as a magnetic tape, drum or disc, for the information recording or reproduction. The magnetic head compris... | 01/20/1981 |
| 4226018 | Method for manufacturing a floating type thin film magnetic head An improved method for manufacturing a floating type thin film magnetic head, which comprises the steps of depositing numerous thin film transducers in a matrix form on a lapped plain surface of core block stock; cutting the core block stock into a plural... | 10/07/1980 |
| 4219853 | Read/write thin film head A method of making a thin film inductive head assembly, which has separate read and write transducers, comprises the steps of depositing the elemental layers of one thin film transducer on a substrate; sputter depositing on the transducer a thick transpar... | 08/26/1980 |
| 4204315 | Method of producing a magnetic transducer device A magnetic transducer and method of operation is disclosed for removing the effect of interference magnetic fields present when detecting information magnetically coded on a carrier. The transducer is provided with a magnetoresistive compensating element ... | 05/27/1980 |
| 4143458 | Method of making a thin film magnetic head assembly A method of making a thin film magnetic head assembly having a spaced substrate and superstrate with a thin film magnetic transducer mounted therebetween by the steps of positioning at least one spacing member between the substrate and superstrate, placin... | 03/13/1979 |
| 4025379 | Method of making laminated magnetic material An extrusion billet is fabricated from layers of soft magnetic material separated by one or more metal layers. The billet is coreduced and heat treated to impart the desired magnetic properties to the soft magnetic material and also to form intermetallic ... | 05/24/1977 |
| 3968565 | Method of manufacturing a device comprising a semiconductor body The invention relates to a method of manufacturing a device, for example, a magnetic head for recording and playing back information on a magnetisable medium. In this method, a substrate of semiconductor material is profiled by a selective electrolytic et... | 07/13/1976 |
| 3967368 | Method for manufacturing and using an internally biased magnetoresistive magnetic transducer A magnetic transducer exhibiting the magnetoresistive (MR) effect is made by depositing at least two thin film layers. An MR film placed in electrical contact with a higher resistivity layer is magnetically biased by a portion of the MR sense current shun... | 07/06/1976 |
